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Haven Fits Over Sunglasses are designed to be worn over medium sized prescription eyeglasses. The Meridian features traditional shapes with side windows for optimal coverage and visibility. They will fit over prescription glasses not exceeding 5 1/2" wide x 1 5/8" tall.The frames are constructed from lightweight, ballistic nylon with BendToFit temples for quality and comfort. The patented frame design provides Advanced UV Protection by blocking light from all angles.All Haven Sunglasses feature TX7 Polarized lenses with Tough Coat and Zero Friction Surface technology. These lens advancements offer five times the scratch resistance over standard polarized lenses and the highest level of water repellent and easy-clean properties available in a Fits Over product.